Understanding steganography online
Steganography embeds additional data within a host image.
Hidden data is not automatically encrypted and may be damaged by resizing or recompression.
A practical workflow
- Choose the required source files, if any. Files are handled as stated in the workspace privacy label.
- Set the available controls and apply the operation.
- Compare the actual output, check its dimensions and download the generated file.
Decisions and limitations
- Operation
- Message
Images up to 16 megapixels and 20 MB. Keep an original copy. Export preserves pixels, not editable layers or original metadata.
Questions about this task
Where do I use the current tool?
Hide UTF-8 text in RGB low bits, or read a message from an unmodified Photolisa PNG. This hides data but does not encrypt it.
What should I check for steganography online?
Hidden data is not automatically encrypted and may be damaged by resizing or recompression.
Which settings and formats are confirmed?
PNG or text. Images up to 16 megapixels and 20 MB. Keep an original copy. Export preserves pixels, not editable layers or original metadata.